Re: [PATCH 05/17] [m68k] Atari: fix EtherNAT interrupt number; conditionalize EtherNAT platform device register

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On Thu, Jan 31, 2013 at 1:18 AM, Michael Schmitz <schmitzmic@xxxxxxxxx> wrote:
[PATCH 05/17] [m68k] Atari: fix EtherNAT interrupt number; conditionalize EtherNAT platform device register

To be folded into

m68k-queue/m68k-atari-Initial-EtherNAT-SMC91C111-driver.patch
m68k-queue/m68k-atari-Add-missing-platform-check-before-registe.patch

--- a/arch/m68k/atari/config.c
+++ b/arch/m68k/atari/config.c
@@ -686,16 +686,27 @@ static struct platform_device smc91x_device = {
        .resource       = smc91x_resources,
 };

-static struct platform_device *atari_platform_devices[] __initdata = {
+static struct platform_device *atari_ethernat_devices[] __initdata = {
        &smc91x_device
 };

 int __init atari_platform_init(void)
 {
+       unsigned char *enatc_virt;

This should be protected by #ifdef CONFIG_ATARI_ETHERNAT too, else you
get an unused
compiler warning if CONFIG_ATARI_ETHERNAT is disabled.
Move it to the block below, inside "{ ... }"?

+       int rv = -ENODEV;

0? Else it will return -ENODEV if ETHERNAT is disabled or not found.

+
        if (!MACH_IS_ATARI)
                return -ENODEV;

-       return platform_add_devices(atari_platform_devices, ARRAY_SIZE(atari_platform_devices));
+#if IS_ENABLED(CONFIG_ATARI_ETHERNAT)
+       enatc_virt = (unsigned char *)ioremap((ATARI_ETHERNAT_PHYS_ADDR+0x23), 0xf);
+       if (hwreg_present(enatc_virt)) {
+               rv = platform_add_devices(atari_ethernat_devices, ARRAY_SIZE(atari_ethernat_devices));
+       }
+       iounmap(enatc_virt);
+#endif
+
+       return rv;
 }

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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